I tried connect my Moto G with my VW Passat, but without Sim card on my phone. The process is same when I put the sim card on my phone. The car tried connect but it coundn't connect with the phone. I saw this messenje in my phone "Teléfono en modo normal".

I think the problem is that the program can not connect with the Sim card.
I don't know if this help you.

Hi all
I have a rooted moto G LTE (XT1039-Kitkat 4.4.4) and a VW passat. Install of Rsap V2.5 on the stockrom is fine but when I check the Sim access, the app returns the error msg "CONNECT_REQ - Status change is not Card reset". When I try to connect the Moto G, the car phone system displays the PIN code and requests to enter it. After ~1 mn the pairing aborts.

So I installed the cyanogenmod-11-peregrine (Unofficial build #2) on my phone -> same results

Anyone tried it with the LTE version of the moto g? Is there any chance that it has a different radio fw?
I get one onTuesday but probably am not able to return it after trying rsap since rooting would void the warranty